We’re pretty sure partygoers rushed to buy their $25 tickets when they learned about the Salahis' scheduled appearance.

But Tareq and Michaele were not the "life of the party" Thursday night -- because they never even went. The Salahis backed out at the last-minute after hearing media would be on the boat, according to the Reliable Source. Tareq and Michaele are scared of a little "lights, camera, action"? Who knew?